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| Summary | double __atan ( double x); /* number to calculate arc tangent of */ |
| Description | The __atan debugger function calculates the arc tangent of the floating-point number x. The floating-point value returned by __atan is a number in the -π/2 to π/2 range. |
| Return Value | The __atan function returns the arc tangent of x. |
| See Also | |
| Example | > __atan(3); |
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